Go through the following case carefully and answer the given questions:
A teacher asked four students to identify the type of bonding in different compounds and explain how the compounds are formed.
| Compound | Elements Involved | Bond Formation |
| Water \((H_{2}O)\) | Hydrogen + Oxygen | Electrons are shared |
| Methane \((CH_{4})\) | Carbon + Hydrogen | Electrons are shared |
| Sodium chloride \((NaCl)\) | Sodium + Chlorine | Electron is transferred from Na to Cl |
| Magnesium oxide \((MgO)\) | Magnesium + Oxygen | Two electrons are transferred from Mg to O |
The teacher explained that compounds formed by sharing of electrons are called covalent compounds, whereas compounds formed by transfer of electrons are called ionic compounds.
1. Based on the information given, which observation correctly distinguishes ionic compounds from covalent compounds? -
2. Which compound involves the largest number of electrons transferred from one metal atom? -